./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:42:32,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:42:32,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:42:32,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:42:32,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:42:33,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:42:33,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:42:33,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:42:33,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:42:33,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:42:33,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:42:33,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:42:33,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:42:33,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:42:33,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:42:33,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:42:33,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:42:33,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:42:33,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:42:33,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:42:33,013 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:42:33,013 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:42:33,014 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:42:33,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:42:33,014 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:42:33,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:42:33,015 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:42:33,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:42:33,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:42:33,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:42:33,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:42:33,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:42:33,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:42:33,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:42:33,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:42:33,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:42:33,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:42:33,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:42:33,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:42:33,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:42:33,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:42:33,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:42:33,024 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-09 10:42:33,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:42:33,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:42:33,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:42:33,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:42:33,315 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:42:33,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-09 10:42:34,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:42:35,178 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:42:35,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-09 10:42:35,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821cfed70/706884835eee4a88ac6a7fdde929cf68/FLAG7e21f7f4d [2024-11-09 10:42:35,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821cfed70/706884835eee4a88ac6a7fdde929cf68 [2024-11-09 10:42:35,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:42:35,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:42:35,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:42:35,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:42:35,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:42:35,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de1e7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35, skipping insertion in model container [2024-11-09 10:42:35,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:42:35,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:42:35,673 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:42:35,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:42:35,777 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:42:35,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35 WrapperNode [2024-11-09 10:42:35,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:42:35,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:42:35,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:42:35,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:42:35,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,835 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-11-09 10:42:35,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:42:35,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:42:35,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:42:35,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:42:35,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,878 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-11-09 10:42:35,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:42:35,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:42:35,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:42:35,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:42:35,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (1/1) ... [2024-11-09 10:42:35,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:42:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:35,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:42:35,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:42:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:42:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:42:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:42:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 10:42:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 10:42:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:42:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:42:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 10:42:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 10:42:36,007 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 10:42:36,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 10:42:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:42:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:42:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:42:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:42:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 10:42:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:42:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:42:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:42:36,012 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:42:36,189 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:42:36,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:42:36,496 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:42:36,500 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:42:36,741 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:42:36,742 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-09 10:42:36,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:36 BoogieIcfgContainer [2024-11-09 10:42:36,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:42:36,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:42:36,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:42:36,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:42:36,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:42:35" (1/3) ... [2024-11-09 10:42:36,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be4d022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:36, skipping insertion in model container [2024-11-09 10:42:36,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35" (2/3) ... [2024-11-09 10:42:36,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be4d022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:36, skipping insertion in model container [2024-11-09 10:42:36,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:36" (3/3) ... [2024-11-09 10:42:36,752 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-09 10:42:36,771 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:42:36,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-09 10:42:36,772 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:42:36,818 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 10:42:36,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 72 transitions, 151 flow [2024-11-09 10:42:36,912 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2024-11-09 10:42:36,913 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:42:36,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 15/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 423 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 67. Up to 4 conditions per place. [2024-11-09 10:42:36,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 72 transitions, 151 flow [2024-11-09 10:42:36,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 72 transitions, 151 flow [2024-11-09 10:42:36,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:36,942 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28afb4fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:36,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-09 10:42:36,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:36,946 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:42:36,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:36,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:36,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:36,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-09 10:42:36,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash 347965, now seen corresponding path program 1 times [2024-11-09 10:42:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:36,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933531609] [2024-11-09 10:42:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:36,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933531609] [2024-11-09 10:42:37,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933531609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:37,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:37,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762043107] [2024-11-09 10:42:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:37,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:37,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 72 [2024-11-09 10:42:37,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:37,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:37,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 72 [2024-11-09 10:42:37,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:37,590 INFO L124 PetriNetUnfolderBase]: 133/497 cut-off events. [2024-11-09 10:42:37,590 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:42:37,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 497 events. 133/497 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2802 event pairs, 110 based on Foata normal form. 90/537 useless extension candidates. Maximal degree in co-relation 752. Up to 254 conditions per place. [2024-11-09 10:42:37,598 INFO L140 encePairwiseOnDemand]: 58/72 looper letters, 36 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-09 10:42:37,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 223 flow [2024-11-09 10:42:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-09 10:42:37,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-09 10:42:37,616 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 151 flow. Second operand 3 states and 152 transitions. [2024-11-09 10:42:37,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 223 flow [2024-11-09 10:42:37,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 223 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:37,625 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 129 flow [2024-11-09 10:42:37,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-11-09 10:42:37,631 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-11-09 10:42:37,632 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 129 flow [2024-11-09 10:42:37,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:37,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:37,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:37,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:42:37,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-09 10:42:37,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash 347966, now seen corresponding path program 1 times [2024-11-09 10:42:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:37,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426236092] [2024-11-09 10:42:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:37,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:37,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426236092] [2024-11-09 10:42:37,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426236092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:37,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:37,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:37,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284237818] [2024-11-09 10:42:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:37,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:37,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2024-11-09 10:42:37,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:37,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:37,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2024-11-09 10:42:37,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:38,032 INFO L124 PetriNetUnfolderBase]: 121/474 cut-off events. [2024-11-09 10:42:38,032 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:42:38,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 474 events. 121/474 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2752 event pairs, 0 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 726. Up to 258 conditions per place. [2024-11-09 10:42:38,038 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 36 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-09 10:42:38,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 229 flow [2024-11-09 10:42:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-09 10:42:38,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6712962962962963 [2024-11-09 10:42:38,042 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 129 flow. Second operand 3 states and 145 transitions. [2024-11-09 10:42:38,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 229 flow [2024-11-09 10:42:38,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:42:38,047 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 135 flow [2024-11-09 10:42:38,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-11-09 10:42:38,048 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-09 10:42:38,049 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 135 flow [2024-11-09 10:42:38,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:38,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:42:38,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:42:38,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-09 10:42:38,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash -758423400, now seen corresponding path program 1 times [2024-11-09 10:42:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084678193] [2024-11-09 10:42:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:38,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:38,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084678193] [2024-11-09 10:42:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084678193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:38,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:42:38,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542591137] [2024-11-09 10:42:38,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:42:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:42:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:42:38,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-09 10:42:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-09 10:42:38,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:38,520 INFO L124 PetriNetUnfolderBase]: 121/473 cut-off events. [2024-11-09 10:42:38,520 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 10:42:38,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 473 events. 121/473 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2612 event pairs, 79 based on Foata normal form. 12/439 useless extension candidates. Maximal degree in co-relation 758. Up to 189 conditions per place. [2024-11-09 10:42:38,528 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 57 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-11-09 10:42:38,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 323 flow [2024-11-09 10:42:38,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:42:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:42:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-09 10:42:38,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-09 10:42:38,533 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 135 flow. Second operand 5 states and 232 transitions. [2024-11-09 10:42:38,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 323 flow [2024-11-09 10:42:38,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:42:38,538 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 142 flow [2024-11-09 10:42:38,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-09 10:42:38,539 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2024-11-09 10:42:38,540 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 142 flow [2024-11-09 10:42:38,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:38,541 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-09 10:42:38,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:42:38,541 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-09 10:42:38,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2036288589, now seen corresponding path program 1 times [2024-11-09 10:42:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128409476] [2024-11-09 10:42:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:38,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:38,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:42:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:38,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:42:38,606 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:42:38,607 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-09 10:42:38,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2024-11-09 10:42:38,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2024-11-09 10:42:38,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2024-11-09 10:42:38,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2024-11-09 10:42:38,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2024-11-09 10:42:38,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2024-11-09 10:42:38,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2024-11-09 10:42:38,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2024-11-09 10:42:38,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2024-11-09 10:42:38,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2024-11-09 10:42:38,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2024-11-09 10:42:38,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2024-11-09 10:42:38,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2024-11-09 10:42:38,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2024-11-09 10:42:38,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2024-11-09 10:42:38,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2024-11-09 10:42:38,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2024-11-09 10:42:38,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2024-11-09 10:42:38,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2024-11-09 10:42:38,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2024-11-09 10:42:38,613 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2024-11-09 10:42:38,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2024-11-09 10:42:38,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2024-11-09 10:42:38,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2024-11-09 10:42:38,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:42:38,615 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 10:42:38,618 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:42:38,618 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:42:38,642 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:42:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 109 transitions, 234 flow [2024-11-09 10:42:38,660 INFO L124 PetriNetUnfolderBase]: 27/183 cut-off events. [2024-11-09 10:42:38,661 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:42:38,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 183 events. 27/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 871 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2024-11-09 10:42:38,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 109 transitions, 234 flow [2024-11-09 10:42:38,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 109 transitions, 234 flow [2024-11-09 10:42:38,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:38,667 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28afb4fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:38,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-09 10:42:38,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:38,669 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:42:38,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:38,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:38,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:38,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:38,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 456202, now seen corresponding path program 1 times [2024-11-09 10:42:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:38,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028814422] [2024-11-09 10:42:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:38,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028814422] [2024-11-09 10:42:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028814422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718434669] [2024-11-09 10:42:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:38,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:38,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 109 [2024-11-09 10:42:38,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:38,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 109 [2024-11-09 10:42:38,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:39,709 INFO L124 PetriNetUnfolderBase]: 3527/7826 cut-off events. [2024-11-09 10:42:39,710 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-09 10:42:39,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13542 conditions, 7826 events. 3527/7826 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 66488 event pairs, 2933 based on Foata normal form. 1771/8977 useless extension candidates. Maximal degree in co-relation 9327. Up to 4730 conditions per place. [2024-11-09 10:42:39,772 INFO L140 encePairwiseOnDemand]: 89/109 looper letters, 60 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-09 10:42:39,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 112 transitions, 364 flow [2024-11-09 10:42:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-09 10:42:39,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7400611620795107 [2024-11-09 10:42:39,776 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 234 flow. Second operand 3 states and 242 transitions. [2024-11-09 10:42:39,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 112 transitions, 364 flow [2024-11-09 10:42:39,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 112 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:39,779 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 200 flow [2024-11-09 10:42:39,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-11-09 10:42:39,780 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-09 10:42:39,780 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 200 flow [2024-11-09 10:42:39,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:39,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:39,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:39,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:42:39,783 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash 456203, now seen corresponding path program 1 times [2024-11-09 10:42:39,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:39,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671184454] [2024-11-09 10:42:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671184454] [2024-11-09 10:42:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671184454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374709451] [2024-11-09 10:42:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:39,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:39,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 109 [2024-11-09 10:42:39,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:39,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:39,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 109 [2024-11-09 10:42:39,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:40,768 INFO L124 PetriNetUnfolderBase]: 3226/7683 cut-off events. [2024-11-09 10:42:40,769 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-09 10:42:40,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13091 conditions, 7683 events. 3226/7683 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 68139 event pairs, 1496 based on Foata normal form. 1/6976 useless extension candidates. Maximal degree in co-relation 10781. Up to 5156 conditions per place. [2024-11-09 10:42:40,842 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 50 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-09 10:42:40,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 104 transitions, 334 flow [2024-11-09 10:42:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-09 10:42:40,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6513761467889908 [2024-11-09 10:42:40,844 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 200 flow. Second operand 3 states and 213 transitions. [2024-11-09 10:42:40,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 104 transitions, 334 flow [2024-11-09 10:42:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:42:40,857 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 215 flow [2024-11-09 10:42:40,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-09 10:42:40,859 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2024-11-09 10:42:40,859 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 215 flow [2024-11-09 10:42:40,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:40,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:40,861 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:42:40,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:42:40,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:40,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 438445138, now seen corresponding path program 1 times [2024-11-09 10:42:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708168254] [2024-11-09 10:42:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708168254] [2024-11-09 10:42:40,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708168254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:40,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:40,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:42:40,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777813312] [2024-11-09 10:42:40,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:40,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:40,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:40,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:40,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:40,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 109 [2024-11-09 10:42:40,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:40,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:40,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 109 [2024-11-09 10:42:40,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:41,718 INFO L124 PetriNetUnfolderBase]: 2958/6770 cut-off events. [2024-11-09 10:42:41,718 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-11-09 10:42:41,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 6770 events. 2958/6770 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 56683 event pairs, 2933 based on Foata normal form. 1/6287 useless extension candidates. Maximal degree in co-relation 11828. Up to 4735 conditions per place. [2024-11-09 10:42:41,761 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 49 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-11-09 10:42:41,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 336 flow [2024-11-09 10:42:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-11-09 10:42:41,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654434250764526 [2024-11-09 10:42:41,764 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 215 flow. Second operand 3 states and 214 transitions. [2024-11-09 10:42:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 336 flow [2024-11-09 10:42:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:42:41,767 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 212 flow [2024-11-09 10:42:41,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-09 10:42:41,770 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 1 predicate places. [2024-11-09 10:42:41,770 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 212 flow [2024-11-09 10:42:41,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:41,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:41,771 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:42:41,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:42:41,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:41,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 420869410, now seen corresponding path program 1 times [2024-11-09 10:42:41,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:41,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872314105] [2024-11-09 10:42:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872314105] [2024-11-09 10:42:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872314105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:42:41,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522647973] [2024-11-09 10:42:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:41,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:42:41,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:42:41,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:42:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:41,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:42:41,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:42:42,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 10:42:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:42,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:42:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522647973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:42:42,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:42:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-09 10:42:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802904200] [2024-11-09 10:42:42,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:42:42,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:42:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:42:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:42:42,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 109 [2024-11-09 10:42:42,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 54.625) internal successors, (437), 8 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:42,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:42,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 109 [2024-11-09 10:42:42,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:43,277 INFO L124 PetriNetUnfolderBase]: 3158/7711 cut-off events. [2024-11-09 10:42:43,277 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2024-11-09 10:42:43,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13132 conditions, 7711 events. 3158/7711 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 69590 event pairs, 241 based on Foata normal form. 168/7366 useless extension candidates. Maximal degree in co-relation 1092. Up to 3454 conditions per place. [2024-11-09 10:42:43,334 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 95 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-11-09 10:42:43,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 524 flow [2024-11-09 10:42:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:42:43,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:42:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2024-11-09 10:42:43,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642201834862386 [2024-11-09 10:42:43,336 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 212 flow. Second operand 5 states and 362 transitions. [2024-11-09 10:42:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 524 flow [2024-11-09 10:42:43,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 149 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:42:43,340 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 212 flow [2024-11-09 10:42:43,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-09 10:42:43,341 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-11-09 10:42:43,341 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 212 flow [2024-11-09 10:42:43,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 54.625) internal successors, (437), 8 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:43,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:43,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:43,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:42:43,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:42:43,543 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:43,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1684431573, now seen corresponding path program 1 times [2024-11-09 10:42:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506964015] [2024-11-09 10:42:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506964015] [2024-11-09 10:42:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506964015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:42:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678813372] [2024-11-09 10:42:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:43,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:42:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:42:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:42:43,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 109 [2024-11-09 10:42:43,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:43,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:43,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 109 [2024-11-09 10:42:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:44,322 INFO L124 PetriNetUnfolderBase]: 2883/6291 cut-off events. [2024-11-09 10:42:44,322 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2024-11-09 10:42:44,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11568 conditions, 6291 events. 2883/6291 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 50302 event pairs, 2883 based on Foata normal form. 0/6052 useless extension candidates. Maximal degree in co-relation 8227. Up to 4605 conditions per place. [2024-11-09 10:42:44,374 INFO L140 encePairwiseOnDemand]: 100/109 looper letters, 38 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2024-11-09 10:42:44,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 274 flow [2024-11-09 10:42:44,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2024-11-09 10:42:44,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5626911314984709 [2024-11-09 10:42:44,377 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 212 flow. Second operand 3 states and 184 transitions. [2024-11-09 10:42:44,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 274 flow [2024-11-09 10:42:44,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 264 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:42:44,382 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 188 flow [2024-11-09 10:42:44,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-09 10:42:44,383 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -7 predicate places. [2024-11-09 10:42:44,384 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 188 flow [2024-11-09 10:42:44,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:44,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:44,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:44,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:42:44,385 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:44,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1684431574, now seen corresponding path program 1 times [2024-11-09 10:42:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127301092] [2024-11-09 10:42:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:44,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:44,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127301092] [2024-11-09 10:42:44,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127301092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:44,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:42:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081978962] [2024-11-09 10:42:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:44,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:42:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:44,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:42:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:42:44,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 109 [2024-11-09 10:42:44,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:44,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:44,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 109 [2024-11-09 10:42:44,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:45,475 INFO L124 PetriNetUnfolderBase]: 4199/8785 cut-off events. [2024-11-09 10:42:45,475 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-11-09 10:42:45,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15949 conditions, 8785 events. 4199/8785 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 71802 event pairs, 3024 based on Foata normal form. 0/8322 useless extension candidates. Maximal degree in co-relation 15940. Up to 4582 conditions per place. [2024-11-09 10:42:45,527 INFO L140 encePairwiseOnDemand]: 91/109 looper letters, 84 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2024-11-09 10:42:45,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 466 flow [2024-11-09 10:42:45,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:42:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:42:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2024-11-09 10:42:45,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6536697247706422 [2024-11-09 10:42:45,530 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 188 flow. Second operand 4 states and 285 transitions. [2024-11-09 10:42:45,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 466 flow [2024-11-09 10:42:45,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 127 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:42:45,533 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 291 flow [2024-11-09 10:42:45,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-11-09 10:42:45,534 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2024-11-09 10:42:45,534 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 291 flow [2024-11-09 10:42:45,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:45,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:45,534 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-09 10:42:45,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:42:45,535 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-11-09 10:42:45,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1267818557, now seen corresponding path program 1 times [2024-11-09 10:42:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170436819] [2024-11-09 10:42:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:45,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:42:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:42:45,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:42:45,578 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:42:45,578 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-11-09 10:42:45,578 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 33 remaining) [2024-11-09 10:42:45,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 33 remaining) [2024-11-09 10:42:45,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 33 remaining) [2024-11-09 10:42:45,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 33 remaining) [2024-11-09 10:42:45,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 33 remaining) [2024-11-09 10:42:45,579 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 33 remaining) [2024-11-09 10:42:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (25 of 33 remaining) [2024-11-09 10:42:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (24 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 33 remaining) [2024-11-09 10:42:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 33 remaining) [2024-11-09 10:42:45,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 33 remaining) [2024-11-09 10:42:45,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 33 remaining) [2024-11-09 10:42:45,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 33 remaining) [2024-11-09 10:42:45,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 33 remaining) [2024-11-09 10:42:45,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 33 remaining) [2024-11-09 10:42:45,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 33 remaining) [2024-11-09 10:42:45,584 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 33 remaining) [2024-11-09 10:42:45,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:42:45,585 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:42:45,586 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:42:45,586 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:42:45,611 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:42:45,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 146 transitions, 319 flow [2024-11-09 10:42:45,633 INFO L124 PetriNetUnfolderBase]: 42/284 cut-off events. [2024-11-09 10:42:45,633 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 10:42:45,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 284 events. 42/284 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1457 event pairs, 1 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 194. Up to 12 conditions per place. [2024-11-09 10:42:45,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 146 transitions, 319 flow [2024-11-09 10:42:45,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 146 transitions, 319 flow [2024-11-09 10:42:45,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:42:45,642 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28afb4fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:42:45,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-09 10:42:45,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:42:45,643 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:42:45,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:42:45,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:45,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:45,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-09 10:42:45,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 601180, now seen corresponding path program 1 times [2024-11-09 10:42:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103791660] [2024-11-09 10:42:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:45,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103791660] [2024-11-09 10:42:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103791660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857835898] [2024-11-09 10:42:45,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:45,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:45,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 146 [2024-11-09 10:42:45,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 146 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:45,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:45,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 146 [2024-11-09 10:42:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:42:56,076 INFO L124 PetriNetUnfolderBase]: 67219/118634 cut-off events. [2024-11-09 10:42:56,077 INFO L125 PetriNetUnfolderBase]: For 1681/1681 co-relation queries the response was YES. [2024-11-09 10:42:56,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213336 conditions, 118634 events. 67219/118634 cut-off events. For 1681/1681 co-relation queries the response was YES. Maximal size of possible extension queue 2834. Compared 1197662 event pairs, 55746 based on Foata normal form. 29969/141352 useless extension candidates. Maximal degree in co-relation 109933. Up to 77892 conditions per place. [2024-11-09 10:42:57,198 INFO L140 encePairwiseOnDemand]: 120/146 looper letters, 84 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-09 10:42:57,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 154 transitions, 507 flow [2024-11-09 10:42:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:42:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:42:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2024-11-09 10:42:57,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7579908675799086 [2024-11-09 10:42:57,201 INFO L175 Difference]: Start difference. First operand has 128 places, 146 transitions, 319 flow. Second operand 3 states and 332 transitions. [2024-11-09 10:42:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 154 transitions, 507 flow [2024-11-09 10:42:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 154 transitions, 507 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:42:57,207 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 273 flow [2024-11-09 10:42:57,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2024-11-09 10:42:57,209 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2024-11-09 10:42:57,209 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 273 flow [2024-11-09 10:42:57,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:57,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:42:57,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:42:57,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:42:57,210 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-09 10:42:57,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:42:57,211 INFO L85 PathProgramCache]: Analyzing trace with hash 601181, now seen corresponding path program 1 times [2024-11-09 10:42:57,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:42:57,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179515096] [2024-11-09 10:42:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:42:57,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:42:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:42:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:42:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:42:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179515096] [2024-11-09 10:42:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179515096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:42:57,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:42:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:42:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319242021] [2024-11-09 10:42:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:42:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:42:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:42:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:42:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:42:57,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 146 [2024-11-09 10:42:57,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:42:57,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:42:57,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 146 [2024-11-09 10:42:57,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:06,156 INFO L124 PetriNetUnfolderBase]: 61458/112806 cut-off events. [2024-11-09 10:43:06,156 INFO L125 PetriNetUnfolderBase]: For 4366/4366 co-relation queries the response was YES. [2024-11-09 10:43:06,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201819 conditions, 112806 events. 61458/112806 cut-off events. For 4366/4366 co-relation queries the response was YES. Maximal size of possible extension queue 2671. Compared 1180392 event pairs, 39784 based on Foata normal form. 1/104441 useless extension candidates. Maximal degree in co-relation 164460. Up to 85559 conditions per place. [2024-11-09 10:43:07,416 INFO L140 encePairwiseOnDemand]: 142/146 looper letters, 63 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-11-09 10:43:07,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 429 flow [2024-11-09 10:43:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-11-09 10:43:07,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.639269406392694 [2024-11-09 10:43:07,419 INFO L175 Difference]: Start difference. First operand has 127 places, 121 transitions, 273 flow. Second operand 3 states and 280 transitions. [2024-11-09 10:43:07,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 429 flow [2024-11-09 10:43:07,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:43:07,641 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 283 flow [2024-11-09 10:43:07,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2024-11-09 10:43:07,642 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2024-11-09 10:43:07,642 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 283 flow [2024-11-09 10:43:07,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:07,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:07,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:43:07,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:43:07,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-09 10:43:07,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1172647921, now seen corresponding path program 1 times [2024-11-09 10:43:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630270565] [2024-11-09 10:43:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630270565] [2024-11-09 10:43:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630270565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:43:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760697298] [2024-11-09 10:43:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:07,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:43:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:43:07,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:43:07,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:43:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:07,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:43:07,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:43:07,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 10:43:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:07,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:43:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760697298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:43:07,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:43:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-09 10:43:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301073160] [2024-11-09 10:43:07,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:43:07,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:43:07,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:43:07,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:43:08,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 146 [2024-11-09 10:43:08,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 72.625) internal successors, (581), 8 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:08,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:08,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 146 [2024-11-09 10:43:08,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:16,753 INFO L124 PetriNetUnfolderBase]: 61199/115360 cut-off events. [2024-11-09 10:43:16,753 INFO L125 PetriNetUnfolderBase]: For 9524/9524 co-relation queries the response was YES. [2024-11-09 10:43:17,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205415 conditions, 115360 events. 61199/115360 cut-off events. For 9524/9524 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 1261496 event pairs, 1861 based on Foata normal form. 1896/111451 useless extension candidates. Maximal degree in co-relation 17737. Up to 59239 conditions per place. [2024-11-09 10:43:17,585 INFO L140 encePairwiseOnDemand]: 142/146 looper letters, 154 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2024-11-09 10:43:17,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 228 transitions, 817 flow [2024-11-09 10:43:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:43:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:43:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2024-11-09 10:43:17,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 10:43:17,587 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 283 flow. Second operand 6 states and 584 transitions. [2024-11-09 10:43:17,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 228 transitions, 817 flow [2024-11-09 10:43:17,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 228 transitions, 815 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:43:17,594 INFO L231 Difference]: Finished difference. Result has 131 places, 123 transitions, 297 flow [2024-11-09 10:43:17,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=131, PETRI_TRANSITIONS=123} [2024-11-09 10:43:17,595 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2024-11-09 10:43:17,595 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 123 transitions, 297 flow [2024-11-09 10:43:17,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.625) internal successors, (581), 8 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:17,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:17,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:17,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:43:17,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:43:17,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-09 10:43:17,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash -129488129, now seen corresponding path program 1 times [2024-11-09 10:43:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445331117] [2024-11-09 10:43:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:17,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445331117] [2024-11-09 10:43:17,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445331117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:43:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533282485] [2024-11-09 10:43:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:17,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:43:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:43:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:43:18,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 146 [2024-11-09 10:43:18,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 123 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:18,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 146 [2024-11-09 10:43:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:30,337 INFO L124 PetriNetUnfolderBase]: 92749/163311 cut-off events. [2024-11-09 10:43:30,337 INFO L125 PetriNetUnfolderBase]: For 12667/12667 co-relation queries the response was YES. [2024-11-09 10:43:30,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305204 conditions, 163311 events. 92749/163311 cut-off events. For 12667/12667 co-relation queries the response was YES. Maximal size of possible extension queue 3973. Compared 1694417 event pairs, 59873 based on Foata normal form. 0/154085 useless extension candidates. Maximal degree in co-relation 161433. Up to 77696 conditions per place. [2024-11-09 10:43:31,509 INFO L140 encePairwiseOnDemand]: 120/146 looper letters, 121 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2024-11-09 10:43:31,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 701 flow [2024-11-09 10:43:31,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:43:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:43:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-09 10:43:31,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2024-11-09 10:43:31,511 INFO L175 Difference]: Start difference. First operand has 131 places, 123 transitions, 297 flow. Second operand 4 states and 388 transitions. [2024-11-09 10:43:31,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 701 flow [2024-11-09 10:43:31,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 190 transitions, 686 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 10:43:31,520 INFO L231 Difference]: Finished difference. Result has 134 places, 135 transitions, 434 flow [2024-11-09 10:43:31,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=134, PETRI_TRANSITIONS=135} [2024-11-09 10:43:31,521 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, 6 predicate places. [2024-11-09 10:43:31,521 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 135 transitions, 434 flow [2024-11-09 10:43:31,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:31,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:31,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:31,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:43:31,522 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2024-11-09 10:43:31,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash -129488128, now seen corresponding path program 1 times [2024-11-09 10:43:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824918161] [2024-11-09 10:43:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:31,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824918161] [2024-11-09 10:43:31,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824918161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:31,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:31,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:43:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102555107] [2024-11-09 10:43:31,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:31,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:43:31,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:43:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:43:32,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2024-11-09 10:43:32,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 135 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:32,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:32,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2024-11-09 10:43:32,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand